Abstract
The paper reports the results of the ion irradiation impact on a monocrystalline tungsten alloy, W–6Re. This material is considered for use in the design of fusion reactors. Irradiation was carried out in order to simulate radiation effects and analyze the radiation resistance of the fusion reactor material. Specimens were irradiated with 5.6 MeV Fe ions at 500°C up to a maximum damage dose of 8 dpa. Microstructure of W–6Re was analyzed before and after irradiation. It is shown with transmission electron microscopy that the formation of structural defects, dislocation loops with sizes of 2–15 nm and a number density of 1.2 × 1023 m–3 occurs as a result of irradiation. Detailed analysis by atomic probe tomography microscope revealed the decomposition of the solid solution with the formation of nanoscale segregations enriched in rhenium by 18 at %. The radiation-induced hardening of the irradiated layer is determined by nanoindentation. The strength increment was 1.6 GPa.
Similar content being viewed by others
REFERENCES
M. Rieth et al., J. Nucl. Mater. 432, 482 (2013).
Y. Qi et al., Mater. Lett. 242, 115 (2019).
I. Sukuba et al., Eur. Phys. J. D 70, 11 (2016).
M. Merola et al., Fusion Eng. Des. 96–97, 34 (2015).
R. A. Pitts et al., J. Nucl. Mater. 438, S48 (2013).
G. Pintsuk, Tungsten as a Plasma-Facing Material in Comprehensive Nuclear Materials (Elsevier, Amsterdam, 2012), p. 551.
M. R. Gilbert and J.-Ch. Sublet, Nucl. Fusion 51, 043005 (2011).
Sh. Watanabe, Sh. Nogami, J. Reiser, M. Rieth, S. Sickinger, S. Baumgartner, T. Miyazawa, and A. Hasegawa, Fusion Eng. Des. 148, 111323 (2019).
A. Xu et al., Acta Mater. 87, 121 (2015).
A. Xu et al., Acta Mater. 124, 71 (2017).
E. Hasenhuetl et al., Nucl. Instrum. Methods Phys. Res., Sect. B 397, 11 (2017).
D. E. J. Armstrong et al., J. Nucl. Mater. 432, 428 (2013).
A. Hasegawa et al., J. Nucl. Mater. 471, 175 (2016).
T. Kulevoy, B. Chalyhk, P. Fedin, A. Kozlov, et al., Rev. Sci. Instrum. 87, 02C102 (2016).
A. Spitsyn, N. Bobyr, T. Kulevoy, P. Fedin, A. Semennikov, and V. Stolbunov, Fusion Eng. Des. 146, 1313 (2019).
S. V. Rogozhkin, A. A. Nikitin, A. A. Khomich, N. A. Iskandarov, V. V. Khoroshilov, A. A. Bogachev, A. A. Lukyanchuk, O. A. Raznitsyn, A. S. Shutov, P. A. Fedin, R. P. Kuibeda, T. V. Kulevoy, A. L. Vasiliev, M. Yu. Presniakov, K. S. Kravchuk, and A. S. Useinov, Phys. At. Nucl. 82, 1239 (2019).
T. Kulevoy, A. Aleev, S. Ivanov, A. Kozlov, G. Kropachev, R. Kuibeda, Nikitin, A. S. Rogozhkin, A. Semennikov, B. Sharkov, and A. Zaluzhny, in Proceedings of the International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators, AP/P5 07 (2009), p. 1.
D. Kashinsky, A. Kolomiets, T. Kulevoy, R. Kuybida, V. Kuzmichov, S. Minaev, V. Pershin, B. Sharkov, R. Vengrov, and S. Yaramishev, in Proceedings of European Particle Accelerator Conference EPAC 2000, p. 854.
R. E. Stoller, M. B. Toloczko, G. S. Was, A. G. Certain, S. D. Dwaraknath, and F. A. Garner, Nucl. Instrum. Methods Phys. Res., Sect. B 310, 75 (2013).
S. V. Rogozhkin, A. A. Aleev, A. A. Lukyanchuk, A. S. Shutov, O. A. Raznitsyn, and S. E. Kirillov, Instrum. Exp. Tech. 60, 428 (2017).
Y.-T. Cheng and C.-M. Cheng, Mater. Sci. Eng. R 44, 91 (2004). https://doi.org/10.1016/j.mser.2004.05.001
W. D. Nix and H. Gao, J. Mech. Phys. Solids 46, 411 (1998).
ACKNOWLEDGMENTS
Specimen analysis and irradiation were performed at the KAMIKS Shared Access Center (http://kamiks.itep.ru/) at the Alikhanov Institute for Theoretical and Experimental Physics, National Research Center “Kurchatov Institute.”
Funding
The reported study was funded by the Russian Foundation for Basic Research according to the research project no. 18-32-20174.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflicts of interest.
Rights and permissions
About this article
Cite this article
Nikitin, A.A., Bobyr, N.P., Rogozhkin, S.V. et al. Ion Radiation Impact on Microstructure and Mechanical Properties of W–6Re Alloy at 500°С. Phys. Atom. Nuclei 83, 1638–1643 (2020). https://doi.org/10.1134/S1063778820120054
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063778820120054